portrait of cluster
Aphanothece (a-fan-owe-theek-ee) blue green alga in which many coccoid or cylindrical cells share a common mucus sheath. Phase contrast. This image taken by Michele Bahr and David Patterson of material collected from the water column and the margins of Lake Toolik (Alaska, USA) in August, 2001. Image copyright: Michele Bahr and D. J. Patterson, used under license to MBL (micro*scope).
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Aphanothece
From the collection
Lake Toolik, Arctic Alaska
| Description of Aphanothece: Unicellular, may form colonies with oval-shaped or oblong cells clustered densely and evenly within firm and abundant mucilage, although the mucous sheaths of individual cells are indistinct. The colonies are often macroscopic, well-defined or irregular in shape, and may be free-floating or sedentary. The cells are gray, olive, or bright blue-green in color, and have granules but lack vacuoles. In colonies, the cells form a single layer often with cells that at least in regions seem to be aligned in rows. Some species reported as solitary motile forms, but edges of genus remain unclear. |
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